Handlaunching Large Electric Gliders

We have been handlaunching R/C planes for 40 years with a short run and the plane usually lifts out of our hands toward the horizon. We have launched a multitude of power planes and small (2m) gliders in this way............no problem. BUT, you just can't launch the big boys(>3.5m, >10lb) in this way in my experience. We now fly a 3.2 meter XL3200 as well as a 4m Albatros. Both have electric motors. Each of these planes need a few running steps FOLLOWED by a firm, straight, throw toward the horizon with the throwing arm follow-thru extended forward also toward the horizon. The wings MUST be level and the throw controlled, but strong.

To help practice this technique we constructed ( 4ft of 3" PVC, 2 rakes, A 10lb sledge hammer head tapped into the PVC pipe to the CG under the rakes, Duct tape) a dummy plane with a generous wingspan and approximate weight (sledge hammer head). The diameter of the PVC is much like our plane fuselage and the rakes will be tipped by the wind if not kept level. It has been a terrific trainer and is now retired as our handlaunches are smooth and predictable. Try this. You will see how important the forward toss is.

Moderator: I realize you have a section for humor and, although this could have a hundred humorous captions, I intend it as an instructional suggestion as it has been invaluable to us.

The following photo shows my 76yo father in "training" for the real thing.

Turbo-rake will teach the importance and the motion of the forward toss. You can also evaluate whether the launcher is able to keep the wings level throughout the toss motion. Often the launcher will tip the plane as it is thrown. Without a good forward throw we recommend handlaunching the turbo-rake while wearing steel-tipped boots.

We have had some 10ft, 1sec+ flights with our turbo-rake when set-up as shown. This is much better than some of our power plane launches, particularly when the prop was running backwards or the elevator servo was reversed.